JPS608630Y2 - open case - Google Patents

Description

[Detailed description of the invention] This invention relates to an open showcase in which a self-retractable cover is extended and installed on the outside of an air curtain formed in the front opening.The purpose of this is to prevent the deflection of the cover when it is extended. The objective is to prevent dew and quickly remove dew adhering to the outer surface of the cover.

As shown in FIG. 1, a conventional open showcase 1 has a main body with an insulating wall 2 formed with an opening 3 for taking out products on the front side, and a main body with an insulating wall 2 formed with an opening 3 for taking out products on the front side. 1
The cooler 7 is constructed by arranging the partition plate 4, the bottom plate 5, and the second partition plate 6.
, a cold air flow path 9 in which a blower 8 is installed, a storage chamber 11 having a plurality of shelves 10, a protective air flow path 12 that includes a blower 17 and surrounds the cold air flow path, and a space opposite to each other at the upper and lower ends of the front opening. The cooler has a first air outlet and suction opening 13.14, and a second air outlet and suction opening 15.16 that are arranged in parallel on the outside of the air outlet and suction openings and face each other. By forcing the heat-exchanged cold air flow to circulate as shown by the arrow with the blower 8, a low-temperature air curtain C is created inside the front opening 3.
A is formed to cool the storage chamber 11, and at the same time, a protective air current in contact with the low-temperature air curtain is forcibly circulated as shown by the arrow by the blower 17 to form a protective air curtain CA outside the front opening 3 to cool the low-temperature air curtain. The cold air mass in the CA and storage room 11 is protected from the outside air.

Since 70% of the refrigeration load of the open showcase 1 is accounted for by the front opening 3, a self-rolling type cover 19 made of transparent flexible sheet material is installed with a fluorescent light to reduce the refrigeration load at night. Air outlet 15 located inside 18
The cover 19 is provided on the outside of the air curtains CA and GA, and the cover 19 is extended as necessary to cover the outside of both the air curtains CA and GA, thereby greatly reducing the infiltration of outside air from the front opening 3.

When the cover is extended, it forms a core portion 19a that lies approximately in the middle of the front opening 3, and upper and lower half surfaces 19b and 19c that extend upward and downward, respectively, with the core portion as a boundary. When the lower end of the upper half surface 19b is located behind the upper end of the lower half surface 19c, and at the time of automatic return, the lower half surface 19c is rolled up in the same direction as the upper half surface 19b as shown by the arrow along the outer surface of the upper half surface 19b due to the rotation of the core portion 19a. The upper end of the upper half surface 19b is wrapped around the supporting member 20.
The locking tool 21 provided at the lower end of the lower half surface 19C is detachably locked to the lower end of the front opening 3 to extend into the front opening 3.

According to the above configuration, when the cover 19 is extended, it is possible to prevent the deflection that occurs in the center of the cover 19 due to the weight of the core portion 19a lying approximately in the middle of the front opening 3, and the leakage of cold air from the side front portion of the main body due to the deflection. However, due to the difference in temperature and humidity between the inside and outside of the cover 19, among the dew that adheres to the outer surface of the cover 19, the dew on the upper half surface 19b flows into the protective airflow passage 1 like the dew on the lower half surface 19c.
2 and accumulates between the core part 19a and the lower end of the upper half surface 19b, so the dew cannot be removed. half 1
Since the dew is rolled up while being contained between 9b and 19c, the winding function is deteriorated, and when the dew is stretched again, the caught dew scatters and stains the operator and the floor.

This proposal was made in view of these shortcomings, and the second and third sections are as follows.
An example thereof will be explained with reference to the drawings.

In FIG. 2.3, the same reference numerals as in FIG. 1 are the same or equivalent.

When the cover 19 is extended, the lower end of the upper half surface 19b is located forward of the upper end of the lower half surface 19c, and the lower half surface 19c is the upper half surface, and the lower half surface 19c is connected to the upper half surface 19b along the inner surface of the upper half surface 19b as shown by the arrow.
The support 20 is wound in the same direction as the support 20, and the upper end of the upper half surface 19b is provided outside the fluorescent lamp 18.
A locking tool 21 provided at the lower end of the lower half surface 19c is removably locked to the lower end of the front opening 3.

According to the above configuration, when the cover 19 is extended, the core portion 19a prevents the core portion 19a from bending, and the lower end of the upper half surface 19b is located forward of the upper end of the lower half surface 19c, so that the dew attached to the upper half surface 19b is removed from the lower half surface 19c. As with the dew on the lower half surface, the dew is quickly removed, and the rotation of the core portion 19a during automatic return causes the dew on the lower half surface 19c to be removed.
Since the frost is rolled up in the same direction along the inner surface of the upper half surface 19b, the remaining frost on both the upper and lower half surfaces 19b and 19c is also removed from the lower half surface 19.
It can be removed from the lower end of C and exhibit a smooth winding function, eliminating the drawbacks of the conventional method.

As mentioned above, the present invention is made of flexible sheet material,
A cover is formed in the front opening for taking out the product, and has an automatic winding recovery function that automatically winds up the core part that lies approximately in the middle when extended, and the upper and lower halves that extend upward and downward, respectively, from the core part as a boundary. In an open showcase extended outside the air curtain, the lower end of the upper half of the cover is located forward of the upper end of the lower half when the cover is extended, and the lower half is rolled up along the inner surface of the upper half. Therefore, it is possible to prevent the cover from bending when it is extended, and quickly remove dew on the upper half, and also quickly remove residual frost on both the upper and lower halves when automatically returning. .

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional open showcase, FIGS. 2 and 3 are embodiments of the open showcase of the present invention, FIG. 2 is a longitudinal sectional view, and FIG. 3 is a perspective view. 19...Cover 19a...Core, 1
9b...upper half, 19c...lower half.

Claims (1)

[Scope of utility model registration request] It is made of a flexible sheet material, and has a core that lies approximately in the middle when stretched, and upper and lower halves that extend upward and downward, respectively, with the core as a boundary. In an open showcase in which a cover with a self-winding recovery function that automatically winds up both the upper and lower halves extends outside the air curtain formed in the front opening for taking out products, when the cover is extended, the lower end of the upper half is located forward of the upper end of the lower half, and the lower half is rolled up along the inner surface of the upper half.